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Why does an electromagnet with a steel core remain magnetic even with the current turned of?
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What happens with the energy associated to the magnetic field of a coil with electric current if the electric current is turned off?
The magnetic field or energy associated with the magnetic field will no longer be generated if the current is turned off.
How are electro magnets different from other magnets?
An electromagnet can be turned on and off, with an electric current and a magnet can not turn off
What occurs when an electric current is made by a changing magnetic field?
We might call it induction, magnetic induction, or electromagnetic induction, depending on what kind of setup we were inspecting. It is the phenomenon of induction that allows a moving magnetic field to cause (induce) current flow in a conductor. A link can be found below for more information.
How can a electromagnet pick up more metal things?
More than what? - An electromagnet can pick up metal due to its magnetism - assuming it is turned on. If you increase the current, the electromagnet becomes more powerful - but you must be careful not to pass too much current, otherwise the wires might burn through.
Is a strong magnet that can be turned on and off?
an electromagnet
When this is turned off the electromagnet is no longer magnetic?
Electric current.
Why electromagnet is different from a permanent magnet because an electromagnet what?
Mainly in that the electromagnet is NOT permanent. In other words, it can be switched on and off.Another relevant difference is that the electromagnet constantly requires power, at least while it is on.
What is the name of the effect where a steel ball will stay stuck to an electromagnet for a short period of time after it is turned off?
magnetic effect of current -it mens that a current flowing in a wire produces a magnetic field around it. and here also, electromagnet produces same magnetic field around it and th ball got stuck.
What is difference between of Electromagnet and Electric Magnetic Field?
An electromagnet is a magnet that only generates magnetic forces when electricity is running through it, basically a magnet that can be turned on and off. An electromagnetic field is the magnetic force generated when an electromagnet is used.
How does a magnetic substance turn into an electromagnet?
Magnetic materials (usually iron) is used in the core of electromagnets. A coil is wrapped around this core, an electric current applied and it remains magnetized as long as the current is on. Once the current is turned off, it loses most of it's magnetism.
How does a magnetic substance turn into a electromagnet?
Magnetic materials (usually iron) is used in the core of electromagnets. A coil is wrapped around this core, an electric current applied and it remains magnetized as long as the current is on. Once the current is turned off, it loses most of it's magnetism.
Why does my electromagnet still work after the power stops! The internet isn't giving me any answers?
It is due to a phenomenon called hysteresis. Basically, this is a property by which there is a delay between an event (power stops) and the result (magnetism stops). See ://en.wikipedia.org/wiki/Hysteresis for more.
Why is steel not a suitable material for core of an electromagnet?
steel is note for an elecromagnet because once it turned magnetic it stays magnetic
What are the advantages of Permanent magnet over Electromagnet?
Unlike a permanent magnet, an electromagnet can be turned on and off. One useful advantage of this: Place a metal bar inside the electromagnet, apply current through the electromagnet in one direction, and the magnetic field would move that bar one way -- reverse the current reverses the magnetic field and the bar would move the opposite way. You could use that effect and make an electronically controlled lock for a door.
How are Electromagnets used in magnetic locks?
An electromagnet makes a great door lock. The steel in the door will stay put until the electromagnet is turned off.
What is the difference from a normal magnet to an electromagnet?
An Electromagnet is magnetic..... It can also be switched between positive and negative by the power source being turned around(battery)
What happen to a electromagnet if you switch the current off?
When we turn of the current in an electromagnet then electromagnet looses its magnetic property,provided the material used inside the current carrying solenoid is soft iron core. If, the material is steel then after the current is turned the magnetism propety still prevails and hence steel becomes a permanent magnet.
